Clam and oyster knife



FIG. 1 is a front elevational view of a clam and oyster knife showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a bottom plan view thereof.

FIG. 7 is a cross-sectional view taken along line 7--7 of FIG. 1. 

The ornamental design for a clam and oyster knife, as shown. 